Question: Question 1 Use the Second Derivative Test to determine whether the following function has local maximum, local minimum or saddle point, or neither. f(x, y)

Question 1 Use the Second Derivative Test to determine whether the following function has local maximum, local minimum or saddle point, or neither. f(x, y) = sin x + sin y + sin(x+ y); OSxs27, Osys2n [10 marks] Question 2 (c) Use Lagrange multipliers to find the maximum and minimum values of f subject to the given constraint. Ax, y) = 2x + 6y+10z. subject to g(x, y) = x- +y +2 =35 [10 marks]

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